Check voltage at window motor, should have voltage on one wire, when window going down, and voltage on the other wire when window should be going up, if no voltage for up, more then likely bad window motor switch.

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if you hot wired it straight to the motor and it works up and down fine chances are you have a broken or shorted wire between the button switch and the motor itself possibly between where the door opens and shuts at the hinge

Its either the switch or the window regulator. They all 'live' on the passenger side by the way. I have had both replaced on passenger side over the years on my '88 convertible and guess what? Passenger side window decided not to go up today..down yes..up no so I hope its just a switch. She goes into the hospital Monday. Good luck with yours.

you need to replace the window winder unit. not the electronic switch but the motor/pully system which rolls the window up and down. if u can get the door panel off, you can replace it yourself for around $120, or you can macgyver a fix, without bying new parts. look for a loose cable on the winder unit, thats what will tell u that the winder unit is bad.

The same thing happened to my 1999 JMC Jimmy recently. I believe the problem is that your power window motor has most likely gone out or is starting to go out. The motor will need replaced. They are pretty expensive new. I went to a junkyard and got one for around 15 dollars. When mine went bad, I had rolled my window down about three or four inches and it stuck there. I took my door panel off and tapped on the motor while holding up on the window switch and got it to go up after a few minutes. I am replacing my motor today, I'll leave an update here about the outcome when I finish the job. I hope this information helps you.